RA Tech URGI MK16 Steel Bolt Stop for Umarex (VFC) M4 GBB

RA Tech URGI MK16 Steel Bolt Stop for Umarex (VFC) M4 GBB Steel Construction Design For Upgrade the Original Parts More Durable This Bolt Stop is also modeled after the famous MK16 style, so it would be a perfect fit for the URGI MK16 rifle builder Suitable for Umarex (VFC) M4 Series Airsoft Gas Blow Back GBB Rifle